Labor senator Kristina Keneally has described the investigation into her NSW colleague Emma Husar as distressing and is deeply unimpressed the allegations levelled against her were made public.

Ms Husar, a first term MP for the western Sydney seat of Lindsay, announced on Wednesday she would not be contesting the next election after being accused of bullying staff.

Kristina Keneally has lamented the leaks and rumours that buried Emma Husar. Photo: AAP

An investigation released days later cleared Ms Husar of allegations of lewd conduct and sexual harassment of employees, finding there was no need for her to resign.

However, the report did find she behaved unreasonably towards staff and there were grounds for further investigation into the alleged misuse of entitlements.

“I think it’s been very distressing for everyone involved,” Senator Keneally told Sky News on Sunday.

She said it was regrettable the allegations were leaked to the media and subsequently made public.

“What we want to have in these circumstances is due process and fairness and an opportunity for all people involved to put forward their concerns or respond to complaints if they are made,” Senator Keneally said.

-AAP